RLSH700

The SRT line varies in what is expected from one type to another. The small SRTs (SRT-4 and SRT-6) generally is modified by forced air induction (turbocharger and supercharger respectively). The larger SRTs (SRT-8s and SRT-10s) are simply higher output, NA engines.

The first SRT-4 was offered on the Neon with the old 2.4L turbo (about 230hp & 250ft-lbs of tq), the current one is supposed to be offered on the Caliber with the new 2.4L "World Engine" turbo (engine output was originally rumored to have 300hp & 260ft-lbs of torque but it is down to about 285hp & ?ft-lbs).

The short lived SRT-6 was on the Crossfire with the MB 3.2L supercharged (330hp & 315ft-lbs of tq).

The SRT-8s as Bootcamp explained offer the 6.1L Hemi and are offered on the models he listed.

The SRT-10 was offered on both the Ram and the Viper, the Ram version appears to have been discontinued probably due to the changes made to the new V10 engine. The new SRT-10 Viper produces 600hp & 560 ft-lbs of tq. The Ram SRT-10 produced about 500-505hp & 525ft-lbs of tq.

The SRT line is currently the top performance package offered with Dodge, Chrysler, and Jeep. In truth, the R/T badge would make more sense to be used on Dodge products instead of the SRT badge. What is currently labeled as R/T would be more logical to rebadge as ES or some other badge. On some vehicles (the Viper) offering the SRT badge is really a waste of time as that is the only engine and transmission offer and really the only version in production. It would be better to save that badge and use it later for a higher performance package.